EP 3641178 A4 20210106 - QR DECOMPOSITION-BASED DETECTION METHOD AND APPARATUS
Title (en)
QR DECOMPOSITION-BASED DETECTION METHOD AND APPARATUS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR DETEKTION AUF BASIS VON QR-DEKOMPOSITION
Title (fr)
PROCÉDÉ ET APPAREIL DE DÉTECTION BASÉE SUR LA DÉCOMPOSITION QR
Publication
Application
Priority
- CN 201711483905 A 20171229
- CN 2018079733 W 20180321
Abstract (en)
[origin: EP3641178A1] The present invention discloses a QR decomposition-based detection method and apparatus based on overlapped multiplexing. The QR decomposition-based detection method includes: step S1: obtaining a receive sequence, where the receive sequence is a sequence obtained by encoding and modulating an input signal based on a multiplexing waveform matrix and transmitting the signal through a Gaussian channel; and step S2: detecting the receive sequence by using a QR decomposition algorithm, where step S2 includes: decomposing a foreknown multiplexing waveform matrix into a unitary matrix and an upper triangular matrix; performing matrix multiplication processing on the receive sequence based on the unitary matrix, to obtain a data sequence; and performing layer-by-layer detection on the data sequence based on the data sequence, the upper triangular matrix, and a quantized decision factor. In the present invention, a received signal is correspondingly decoded by using encoding characteristics of an OvXDM system and with reference to QR decomposition-based detection, thereby reducing decoding complexity of the OvXDM system.
IPC 8 full level
H04L 25/03 (2006.01); H04L 27/38 (2006.01)
CPC (source: CN EP US)
H04J 11/0046 (2013.01 - EP); H04J 99/00 (2022.08 - US); H04L 1/0052 (2013.01 - CN US); H04L 25/0246 (2013.01 - EP); H04L 25/03146 (2013.01 - EP); H04L 25/03343 (2013.01 - EP); H04L 27/26025 (2021.01 - EP); H04L 1/0052 (2013.01 - EP); H04L 27/2647 (2013.01 - EP); H04L 27/38 (2013.01 - EP); H04L 2025/03426 (2013.01 - EP)
Citation (search report)
- [YA] EP 3001625 A1 20160330 - INST MINES TÉLÉCOM [FR]
- [YA] EP 2804332 A1 20141119 - BLACKBERRY LTD [CA]
- [XY] JIN X ET AL: "Decoding OvTDM with sphere-decoding algorithm", JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOMMUNICATIONS, BEIJING-YOUDIAN-DAXUE, CN, vol. 15, no. 4, 1 December 2008 (2008-12-01), pages 35 - 39, XP025803237, ISSN: 1005-8885, [retrieved on 20081201], DOI: 10.1016/S1005-8885(08)60399-4
- [A] B. HASSIBI ET AL: "On the sphere-decoding algorithm I. Expected complexity", IEEE TRANSACTIONS ON SIGNAL PROCESSING., vol. 53, no. 8, 1 August 2005 (2005-08-01), US, pages 2806 - 2818, XP055433688, ISSN: 1053-587X, DOI: 10.1109/TSP.2005.850352
- See references of WO 2019127932A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3641178 A1 20200422; EP 3641178 A4 20210106; CN 109995463 A 20190709; US 11283544 B2 20220322; US 2020106553 A1 20200402; WO 2019127932 A1 20190704
DOCDB simple family (application)
EP 18896226 A 20180321; CN 201711483905 A 20171229; CN 2018079733 W 20180321; US 201916703213 A 20191204